Street-sweeper



No. s|2,es2. Patented Oct. I8, I898. F. m. PITMAN & w. T.-MAXWELL.

'STBEE T SWEEPER.

(Application fllad July 3, 1897.)

2 Shanty-Sheet I.

(No Model.)

WITNESSES uvvnvroas l 7 firm a wjzmw A 770/?NEY.

THE uomgvs PETE! no. PHOYU-LITHQ, WASHINGTON Dfqi No. 612,632. PatentedOct. la, I898.

r. M.'P|TMAN & w. T.' MAXWELL.

STREET SWEEPER.

(Application filed .Tu1y 8, 1897.) (ll n Model.) 7 v 2 Shasta-Shoat 2.

A Tram/Er.

TNE NORRS PETERS co. PHO(D-LIYHO WASHINGTON, n c,

NTTED STATES PATENT OFFICE.

FRANCIS M. PITMAN AND WILLIAM T. MAXWVELL, OF CUTLER, INDIANA.

STREET-SWEEPER.

SPECIFICATION forming part of Letterslatent N 0. 612,632, dated October18, 18 98. Application filed July 3, 1897- Serial No. 643,481. (Nomodel.)

To all whom, it may concern:

Be it known that we, FRANCIS lvL PITMAN and WILLIAM T. MAXWELL, ofCutler, in the county of Carroll and State of Indiana, have inventedcertain new and useful Improvements in Rotary Street-Sweepers; and we dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to street-sweepers; and it consists in thedetails of construction and arrangement, which will be fully hereinafterdescribed and claimed.

The object of the present invention is to provide a street-sweepingmachine that can be controlled entirely by one operator and drawn by acomparatively small amount of draft-power, thereby materially reducinglabor and expense of time in manipulating such machines, the parts beingstrong and durable and of such simplicity as to cheapen the cost ofmanufacture.

In the accompanying drawings, Figure 1 is a plan view of astreet-sweeping machine embodying the invention. Fig. 2 is a sideelevation of the same. Fig. 3 is a transverse vertical section. Fig. 41sa detail perspective view of the dumpingscoop. Fig. 5 is a similar Viewof a portion of the brush or broom shaft with the clutch mechanismthereon and the cam-arm for operatingthe same automatically.

Referring to the drawings, wherein similar numerals of reference areemployed to indicate corresponding parts in the several views, thenumeral 1 designates the side bars or sills of a frame connected bysuitable cross-bars 2, arranged at proper intervals. In the front partof the machine a dumping-scoop 3 is secured to and held'in position bymeans of the rod 4, provided with the crank or arm 6 at its center, andwhich rod has its ends to pass through opposite sides of the scoop 3 andwhich are then journaled in suitable boxes 5 upon the top of the.frame 1. To the upper end of the crank or arm 6 is connected the rod 7which extends backwardly to the lever S, pivoted upon the rear end ofthe frame, and which lever is connected by a link 9 to the winding-drum10. The arm or crank 6 extends upwardly a suitable distance and isconnected, by means of the rod 7, with the lever 8 for the purpose ofreleasing friction when thesweeping-receptacle is thrown back as itstrikes the crank, thereby allowing the receptacle to return to itsproper position ready to receive the sweepings again. As the machine iswholly covered over, it would be hard to see just when to releasefriction without the crank and the rod 7, connected therewith. The saidwinding-drum has stub-shafts 11, projecting from opposite ends thereof,slidingly and rotatably mounted in journalbearings 12, formed with slots12 to receivev the said stub-shafts. To the outer portions of the frontend of the upper part of the said dumping-scoop wire ropes or chains 13are connected and extend rearwardly and pass over sheaves or pulleys15*, located on opposite sides of the frame,and thence engage thewinding-drum 10. On the outer end of the stubshafts 11 are mountedsuitable friction-whee1s 15, which are keyed fast. At a suitable pointon opposite sides of the frame hangers 16 depend and carry stub-axles 17,on which groundwheels 18 and 19 are mounted. The said ground-wheels 1Sand 19 operate the frictionwheels 15, and consequently the winding-drumor Windlass 10, when the parts are arranged to produce a contact betweenthe said frictionwheels 15 and the ground-wheels. This arrangement isattained by pressing the lever 8 forwardly toward the front of themachine and moving the winding-drum or windlass 10 in the samedirection, thereby bringingthe frictionwheels 15 in close contact withthe groundwheels 18 and 19, causing a revolution of the saidwinding-drum or Windlass and winding thereon the ropes or chains 13 andelevating the front end of the scoop, so that the contents thereof maybe dumped outwardly from the rear open end. After the said scoop hasbeen relieved of its contents it will automatically fall back into itsnormal position through the medium of its weight, it being understood,of course, that the lever 8 will have been previously moved to releasethe frictionwheels 15 from contact with the ground-wheels 18 and 19. V p

Suspended from the stub-axles 1'7 are hangers 20, in which the oppositeends of the brushshafts 21 have hearing. The said brushshafts 21 aresecured to a brush-cylinder, in

" acter.

which is mounted a steel brush 23, having the form of the ordinarydevices of this char- One brush-shaft 21 is extended outwardly asuitable distance and has mounted thereon a sliding spring-actuatedclutch-collar 25, with an inner groove 26, and in advance of the saidclutch-collar and on the end of the said shaft is a pinion 27, having aninner clutch-face 28 to interlock with the clutch-collar 25. The pinion27 engages a gear-disk or analogous device 28, forming a part of thewheel 19 and located at the center of the latter. By this means thebrush through its shafts is rotated to cause a sweeping action and drivethe dirt upwardly into the dumping-scoop heretofore set forth, and tofacilitate this operation the rear end of the lower part of thedumping-scoop is provided with a hinged apron 29, which trails overthesurface, being swept close under the forward par'tof the brush when thelatteris down in operative position. The hangers 20, supporting thebrush and the mechanism heretofore set forth, are movable on thestub-axles 17, and attached to the lower parts thereof are links 30,which are movably connected at their rear ends to the depending ends 31of a trans versely-disposedrod 32, mounted upon and having movement inbearings 33 at the front end of the machine and continuous with anupwardly-exten ding arm 34, located adjacent to a toothed sector 35 tosustain a desired adjustment. Through the medium of this rod 32 and thelinks 30, attached thereto as set forth, the brush is adapted to beraised out of operative position, and when this elevation of the brushensues the groove 26 on the clutch-collar 25 strikes against a curvedcamarm 36, depending from the adjacent sideof the machine, which drawsthe clutch-sleeve 25 inwardly and disconnects it from the brush 2S andfrom the wheel 19, permitting the pin- 1 ion 27 to run loose on the endof its shaft.

The machine as thus far described is exceptionally complete, and as thebrush-broom operates the dirt is deposited in the scoop, which has thecapacity of an ordinary cartload, and after said scoop is filled thebrush is elevated and the entire machine drawn to a suitable point,where the friction devices are applied and the scoop operated to dumpits contents.

It is obviously apparent that many minor changes in the'details ofconstruction might be made and substituted for those shown and describedwithout in the least departing from the nature or spirit of theinvention..

Having thus described the invention, what is claimed as new is- 1. In astreet-sweeping machine, the frame supported upon suitable wheels, thepivotal rod 4 provided with a crank or arm at its center, and which isjournaled in suitable boxes upon the frame, and a dumping-scoopsuspended from the rod 1, combined with the connecting-rod 7, theoperating-lever 8 pivoted upon the frame, the link 9 which extends fromthe lever to the drum, the drum journaled in slotted boxes so as to bemovable back and forth, friction-wheels upon its ends, and the cords,wires, or chains 13, connected at their front ends to the scoop, and

having their rear ends connected to the drum,

substantially as shown.

2. The frame, hangers 16 suspended therefrom, stub-axles 17 journaled insaid hangers, hangers 20 suspended from said stub-axles, the brushprovided with the shafts 21 which are journaled in the hangers 20, thespringactuated clutch-collar 25 placed upon the brush-shafts, the pinion27 provided with the clutch-face 28, and a wheel secured to the hub ofthe driving-wheel 19, the shaft 32, provided with a suitable handle forengaging and holding a segment, and depending ends; the rods 30 securedto said depending ends, and to the lower ends of the hangers 20, and therod or arm 36 secured to the inner side of the with the clutchmechanism, substantially as described. v p In testimony whereof we havesigned this specification in the presence of two subscribing witnesses.

FRANCIS M. PITMAN. WILLIAM T. MAXWELL.

WVitnesses:

JOHN M. LOGAN, WILsON B. HINKLE.

